(2014/04/01 13:47), Namhyung Kim wrote:
> The commit 5a62257a3ddd1 ("perf probe: Replace line_list with
> intlist") replaced line_list to intlist but it has a problem that if a
> same line was added again, it'd return -EEXIST rather than 1.
Ah, right! that's a different behavior.
> Since line_range_walk_cb() only checks the result being negative, it
> resulted in failure or segfault sometimes.
Could you give me an example input of the segfault? I'd like to trace
it down.
> Cc: Masami Hiramatsu <masami.hiramatsu...@hitachi.com>
> Signed-off-by: Namhyung Kim <namhy...@kernel.org>
Acked-by: Masami Hiramatsu <masami.hiramatsu...@hitachi.com>
Thank you very much!
> ---
> tools/perf/util/probe-finder.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
> index df0238654698..3bf0c8cdccb7 100644
> --- a/tools/perf/util/probe-finder.c
> +++ b/tools/perf/util/probe-finder.c
> @@ -1441,13 +1441,15 @@ static int line_range_walk_cb(const char *fname, int
> lineno,
> void *data)
> {
> struct line_finder *lf = data;
> + int err;
>
> if ((strtailcmp(fname, lf->fname) != 0) ||
> (lf->lno_s > lineno || lf->lno_e < lineno))
> return 0;
>
> - if (line_range_add_line(fname, lineno, lf->lr) < 0)
> - return -EINVAL;
> + err = line_range_add_line(fname, lineno, lf->lr);
> + if (err < 0 && err != -EEXIST)
> + return err;
>
> return 0;
> }
>
--
Masami HIRAMATSU
IT Management Research Dept. Linux Technology Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu...@hitachi.com
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